- replace the RELAY (2710GJ).
(4) If the fault continues:
- replace the LGCIU-1 (5GA1). (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
B. Do the test as given in Para. 3. A. to make sure that operation is correct.
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TASK 29-12-00-810-811
Blue System Pressure Indication on ECAM DU is out of Tolerance
1. Possible Causes
_______________
- ELEC PUMP-B (2075GJ)
- internal leakage
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 12-12-29-611-001 Fill the Hydraulic Fluid Reservoir with a Hand Pump AMM 12-12-29-611-002 Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart AMM 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power AMM 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power AMM 29-00-00-280-002 Check of the Internal Leakage of the Blue Hydraulic System AMM 29-10-00-863-003 Pressurize the Blue Hydraulic System with a Ground
Power Supply AMM 29-10-00-864-003 Depressurize the Blue Hydraulic System AMM 29-12-51-000-001 Removal of the Electric Pump (2075GJ) AMM 29-12-51-400-001 Installation of the Electric Pump (2075GJ) AMM 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
the Ground Connector
AMM 29-24-51-000-001 Removal of the Electric Pump (3075GX)
AMM 29-24-51-400-001 Installation of the Electric Pump (3075GX)
AMM 31-60-00-860-001 EIS Start Procedure
AMM 31-60-00-860-002 EIS Stop Procedure
3. Fault Confirmation
__________________
A. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU HYD/HYD PWR/B WARN/& CTL 2702GJ C12 121VU HYDRAULIC/SOL VALVES/G/Y/B/LEAK/TST 1881GP N35 123VU B HYD/ELEC PUMP 2701GJ AB09
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Feb 01/03R CES
B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).
(3) On the ECAM control panel on the center pedestal, press the HYD pushbutton.Make sure that the HYD page is shown on the ECAM lower Display Unit (DU).
(4) Make sure that the ECAM does not show any of these conditions:
- low air pressure in the Blue reservoir,
- low fluid level in the Blue reservoir.
(5) If necessary, pressurize the reservoir (Ref. AMM TASK 29-14-00-614-002).
(6) If necessary, add fluid to the reservoir (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(7) On panel 50VU, make sure that the HYD/LEAK MEASUREMENT VALVES/B pushbutton switch is set to OFF (ON light not on).
C. Test
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______
ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC
SYSTEM.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS ARE
_______ CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE.
(1) Pressurize the Blue hydraulic system with the electric pump (Ref. AMM TASK 29-10-00-863-003).
(2) Look for the Blue hydraulic system pressure indication on the lower ECAM DU.
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CES 4. Fault Isolation
_______________
A. If the fault confirmation gives:
- a system pressure indication of 2750 psi on the lower ECAM DU:
(1) On panel 50VU, set the HYD/LEAK MEASUREMENT VALVES/B pushbutton switch to on (OFF light not on).
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